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400 g of steam at temperature 100^@C condenses completely to form water at temperature 100^@ C giving off heat of 216 kcal. Find out latent heat of vaporisation of water

Answer»


SOLUTION :Given Mass (m) `=400 kg ,`
heat released (Q) =216 kcal
= 216000 cla
To find:LATENT heat of varporisation of water (L)
Formula Q=mL
Calculation:
Heat given off duringHeat absorbed during
condensation = vaporistation
From of formula
`L=Q/m = (21600)/(400)= 540` cal/g


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